GB190507317A - Improved Sound-reproducing Disc for Gramophones - Google Patents

Improved Sound-reproducing Disc for Gramophones

Info

Publication number
GB190507317A
GB190507317A GB190507317DA GB190507317A GB 190507317 A GB190507317 A GB 190507317A GB 190507317D A GB190507317D A GB 190507317DA GB 190507317 A GB190507317 A GB 190507317A
Authority
GB
United Kingdom
Prior art keywords
disk
towards
gramophones
spirally
thinning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Achille Maitre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190507317A publication Critical patent/GB190507317A/en
Expired legal-status Critical Current

Links

Landscapes

  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

7317. Maitre, A. April 26, 1904, [date applied for under Patents Act, 19011. Phonographs.-The spirally-grooved surface of record disks is made in the form of a truncated cone thinning either towards the edge of the disk or towards the centre. Fig. 2 represents a doublesided disk with the spirally-grooved surface a b in the form of a truncated cone thinning towards the edge. On such a disk, the record starts at the inner end of the spiral and finishes at the outer end, the object being to assist the motion of the stylus by the gentle slope ; in the case converse to that illustrated, this assistance increases as the spring in unwinding loses strength, thereby securing more uniformity in the reproduction.
GB190507317D 1904-04-26 1905-04-06 Improved Sound-reproducing Disc for Gramophones Expired GB190507317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR190507317X 1904-04-26

Publications (1)

Publication Number Publication Date
GB190507317A true GB190507317A (en) 1905-06-15

Family

ID=32606354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190507317D Expired GB190507317A (en) 1904-04-26 1905-04-06 Improved Sound-reproducing Disc for Gramophones

Country Status (1)

Country Link
GB (1) GB190507317A (en)

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